<?php
session_start();
$from = $_GET['from'];
if(!isset($_SESSION['name']) || empty($_SESSION['name'])){
	header("Location: login.php");
}

//Uploading temp file

if ($_FILES["file"]["error"] > 0)
  {
  echo "Error: " . $_FILES["file"]["error"] . "<br>";
  }
else
  {
  echo "Upload: " . $_FILES["file"]["name"] . "<br>";
  echo "Type: " . $_FILES["file"]["type"] . "<br>";
  echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
  echo "Stored in: " . $_FILES["file"]["tmp_name"];
  }

  //Restricting upload

  $allowedExts = array("gif", "jpeg", "jpg", "png");
	$temp = explode(".", $_FILES["file"]["name"]);
	$extension = end($temp);
	if ((($_FILES["file"]["type"] == "image/gif")
	|| ($_FILES["file"]["type"] == "image/jpeg")
	|| ($_FILES["file"]["type"] == "image/jpg")
	|| ($_FILES["file"]["type"] == "image/pjpeg")
	|| ($_FILES["file"]["type"] == "image/x-png")
	|| ($_FILES["file"]["type"] == "image/png"))
	&& in_array($extension, $allowedExts))
	  {
	  if ($_FILES["file"]["error"] > 0)
	    {
	    echo "Error: " . $_FILES["file"]["error"] . "<br>";
	    }
	  else
	    {
	    echo "Upload: " . $_FILES["file"]["name"] . "<br>";
	    echo "Type: " . $_FILES["file"]["type"] . "<br>";
	    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
	    echo "Stored in: " . $_FILES["file"]["tmp_name"];
	    }
	  }
	else
	  {
	  echo "Invalid file";
	  }

//Saving uploaded file

$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& in_array($extension, $allowedExts))
  {
  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
    }
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "<br>";
    echo "Type: " . $_FILES["file"]["type"] . "<br>";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>";

    if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "images/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "images/" . $_FILES["file"]["name"];

      //Returning to add.php with file link

      $_SESSION['link'] = "images/" . $_FILES["file"]["name"];
      if ($from == "add") {
      	header("Location: add.php");
      }
      else{
      	$id = $_GET['tractorId']; 
      	header("Location: $from.php?tractorId=$id");
      }
      }
    }
  }
else
  {
  echo "Invalid file";
  }

?>